TheHolyMonk TheHolyMonk 01-01-2023 Mathematics contestada Find the value of its determinant ~ [tex]\sf A = \begin{vmatrix} 1\: \: 2\: \: 1 \\ 2 \: \: 1 \: \: 2 \\ 1 \: \: 2 \: \: 1\end{vmatrix}[/tex]